Pregnancy Due Date Calculator
40 Week Pregnancy Journey
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
Week 7
Week 8
Week 9
Week 10
Week 11
Week 12
Week 13
Week 14
Week 15
Week 16
Week 17
Week 18
Week 19
Week 20
Week 21
Week 22
Week 23
Week 24
Week 25
Week 26
Week 27
Week 28
Week 29
Week 30
Week 31
Week 32
Week 33
Week 34
Week 35
Week 36
Week 37
Week 38
Week 39
Week 40
Frequently Asked Questions
How does the Due Date Calculator work?
The Due Date Calculator estimates your baby's expected arrival date based on your last menstrual period (LMP) or conception date.
How accurate is the estimated due date?
A due date estimate is generally accurate within 1-2 weeks, but only 5% of babies are born exactly on their estimated date.
Can an ultrasound change my due date?
Yes, an ultrasound scan can provide a more accurate due date based on the baby’s growth and development.
How do doctors calculate my due date?
Doctors use Naegle’s Rule, which adds 280 days (40 weeks) to the first day of your last menstrual period (LMP).
Can my due date change later in pregnancy?
Yes, if the baby is growing at a different rate than expected, your OB-GYN may adjust your due date.
What if I don’t know my LMP?
If you're unsure of your LMP, an early ultrasound scan can help determine your estimated due date.
Can stress or diet affect my due date?
No, your due date is based on gestational age, but factors like stress, diet, or genetics can impact when labor starts.
How can I prepare for my due date?
Track your prenatal milestones, maintain a healthy pregnancy diet, and create a birth plan with your doctor.
Can I have a planned delivery before my due date?
Yes, some women schedule induced labor or C-sections before their due date, but it's best to wait until at least 39 weeks for full development.
How do I know if I’m going into labor early?
Signs of preterm labor include regular contractions, water breaking, and lower back pain before 37 weeks—contact your doctor immediately.